JavaScript's double not operatoris basically double use of (!) operator. This is alogical not operator. (!!) operator converts non-Boolean to Boolean. As you know,!operator reverses the logic, i.e., it returnfalsefor!truevalue andtruefor!false. Examples of (!) Operator !false Output: ...
What is decrement ( ) operator in JavaScript - The decrement operator in Javascript decreases an integer value by one. This operator is often utilized in loops, counters, and mathematical computations where a value has to be decreased sequentially. Types
(not not) operator inJavaScript.This double negation forces a value to be evaluated as either true or false. What is the !! Operator? The double negation(!! )operatoris the! Operator twice and calculates the truth value of a value. It returns aBoolean value, which depends on the truthine...
In this example, the string "5" is converted to a number before the comparison. Here's an example of using the "==" operator in JavaScript: let num = 5; let str = "5"; if(num == str){ console.log("num and str are equal"); } else { console.log("num and str are not equ...
I've seen some people usingvoidoperator in their code. I have also seen this inhrefattributes:javascript:void(0)which doesn't seem any better thanjavascript:; So, what is the justification of using thevoidoperator? 回答 The JavaScript, thevoidoperator is used to explicitly return undefined. ...
While many people are familiar with Java from interactive website features, users may be less familiar with JavaScript — or, indeed, they may wrongly consider the two to be the same. In this article, we discuss what JavaScript is and the differences between Java and JavaScript. Then we’ll...
What is Javascript:void(0) 1. Uses Of Void Operator We have mentioned different uses of the void operator in the examples below. 1.1 Disabling Anchor Text Using Void Operator The first example and basic feature of this Void operator is it prevents the anchor text from navigating the users to...
The implementation of JavaScript code in Node.js also plays an important role in web development. Node.js can reduce server response time due to its single-threaded nature and non-blocking architecture and omit delays.Node.js is also lightweight enough to serve as a scalable tool for ...
So, what is the difference between a normal function and an arrow function? 🤔️ 1. this points to In JavaScript, thethisis a basic and important knowledge point. 1.1 Ordinary functions In ordinary functions,thisis dynamic, and its value depends on how the function is called. There are...
the value ofxinside of it and accepts an argument of a number. Because the inner function has access to the outer function’s scope at the time of its definition, the inner function will be able to use the value ofxeven after the outer function is long gone. Closure coming in clutch. ...